<template>
  <div>
    <div>全场清仓，全部5折</div>

    <ul>
      <li v-for="item in goods" :key="item.name">
        <div>{{ item.name }}</div>
        <div>{{ item.price }}</div>
        <div>折扣：{{ discountDefault }}</div>
      </li>
    </ul>

    <input type="text" v-model = "discountDefault"/>

    <h4>总价 {{ sum }}</h4>

    <button @click="sale">点击开启促销活动</button>
  </div>
</template>

<script>
export default {
  data() {
    return {
      goods: [
        {
          name: "mac电脑",
          price: 15000,
        },
        {
          name: "百事可乐",
          price: 3,
        },
        {
          name: "保温杯",
          price: 99,
        },
        {
          name: "保暖手套",
          price: 130,
        },
      ],
      isShow: false,
      discountDefault: 0.5,
    };
  },
  methods:{
    sale(){
        this.goods.forEach((item)=>{
            item
        })
    }
  },

  computed: {
   sum(){
    return this.goods.reduce((prev, item) => {
          return item.price + prev;
        }, 0);
   }
  },
};
</script>

<style scoped>
ul {
  margin: 0;
  padding: 0;
}

li {
  list-style: none;
  width: 200px;
  height: 80px;
  padding: 10px 0 0 0;
  border: 2px solid #333;
}
</style>
